JP2021071574A - Anti-shake device, method thereof, and image capturing device - Google Patents

Abstract

To allow for making effective use of a camera shake correction range in various shooting conditions.SOLUTION: An anti-shake device provided herein comprises: setup means for setting a correction axis to be used for camera shake correction from among correction axes of first camera shake correction means according to a shooting condition of an image capturing device; and computation means configured to derive a driving amount for the first camera shake correction means required to correct for camera shake on the correction axis that has been set according to the amount of shake of the image capturing device.SELECTED DRAWING: Figure 4

Description

The present invention relates to an anti-vibration device and a method, and an image pickup device.

In recent years, many image pickup devices such as still cameras and video cameras are provided with an image shake correction function. In particular, two types are known as configurations that optically correct image shake. One is a type that realizes an image shake correction operation by moving a correction lens mainly dedicated to image shake correction (hereinafter, referred to as "image shake correction lens") in a direction orthogonal to the optical axis. The other is a type that realizes the image shake correction operation by moving the image sensor (hereinafter, referred to as "image shake correction sensor") in the direction orthogonal to the optical axis and in the direction of rotation.

The runout includes vertical pitch shake and horizontal yaw shake as angular shake, parallel shake in the vertical and horizontal directions as shift shake, and rotational shake as roll shake, for a total of five axes. There are correction axes for each of these five axes of blurring.

The image shake correction effect can be obtained by simultaneously driving either or both of the two image shake correction configurations described above for each axis.

FIG. 7 shows the pitch direction, the yaw direction, and the roll direction in the image pickup apparatus. As shown in FIG. 7, in the imaging device, the optical axis of the imaging optical system is defined as the Z axis, the vertical direction at the normal position is defined as the Y axis, and the directions orthogonal to the Y axis and the Z axis are defined as the X axis. The pitch direction is the X-axis direction (tilt direction), the yaw direction is the Y-axis direction (pan direction), and the roll direction is the Z-axis direction (the imaging surface rotates in a plane orthogonal to the optical axis). Direction). That is, the pitch direction is a direction inclined in the direction perpendicular to the horizontal plane, and the yaw direction is a direction inclined in the horizontal direction with respect to the vertical plane, and is a direction orthogonal to each other.

Further, the up-down / left-right directions such as the X-axis and the Y-axis are the X-direction and the Y-direction in the shift blur.

When correcting using an image shake correction lens, most of them mainly correct pitch blur and yaw blur of angle blur, but some lenses can also correct shift blur. On the other hand, when the image shake correction sensor is used for correction, roll blur can be corrected in addition to angle blur and shift blur.

Angle blur, pitch blur and yaw blur, can be corrected by the image shake correction lens and the image shake correction sensor, respectively, so either one may be corrected, or the camera and lens exchange correction information and the same correction axis is used at the same time. You may make a correction using.

Here, when image shake correction is performed using an image shake correction lens or an image shake correction sensor, there is a mechanical limit (hereinafter, referred to as “correction limit”) in the image shake correction amount. In particular, the image shake correction sensor controls the translational blurring such as angle blurring and shift blurring and the rotation direction blurring of the roll blur so as not to exceed the correction limit within the range of the correction ratio. For example, the correction limit for translational blurring when the rotation direction roll blurring is corrected is different from the correction limit for translational blurring when the rotation direction roll blurring is not corrected, depending on the rotation angle. It becomes smaller.

Patent Document 1 discloses a camera body that receives data on a lens-side blur correction mechanism from a lens barrel and operates at least one of a body-side blur correction mechanism and a lens-side blur correction mechanism based on the received data. There is.

Further, Patent Document 2 discloses a camera system in which when an interchangeable lens is capable of correcting blur in the pitch direction and yaw direction, a roll blur correction range is set larger than in the case of a lens which is not possible, and control is performed according to a blur correction ratio. ing.

Japanese Unexamined Patent Publication No. 2010-91792 Japanese Unexamined Patent Publication No. 2017-21253

The image shake correction sensor is driven depending on whether the mounted lens includes an image shake correction lens and whether the image shake correction lens and the image shake correction sensor can simultaneously perform image shake correction using the same correction axis. The correction axis to be used changes.

Further, as described above, the correction amount of the image shake correction sensor has a mechanical correction limit, and when trying to secure the correction amount in the rotation direction, the correction amount in the translation direction is restricted. In particular, the larger the correction amount in the rotation direction, the smaller the correction amount in the translation direction.

In Patent Document 1, it is determined to operate at least one of the body-side blur correction mechanism and the lens-side blur correction mechanism depending on whether or not the lens-side blur correction mechanism is provided. However, if the correction axis is fixed only by the lens type, there is a problem that the image shake correction sensor cannot be effectively used in various shooting states.

Further, in Patent Document 2, the correction range in the roll direction is changed according to whether or not the interchangeable lens can correct the blur in the pitch direction and the yaw direction. However, if the correction amount is fixed only by the lens type, there is a problem that the image shake correction sensor cannot be effectively used in various shooting states.

The present invention has been made in view of the above problems, and an object of the present invention is to effectively utilize the correction range of image shake correction in various shooting states.

In order to achieve the above object, the vibration isolator of the present invention includes a setting means for setting a correction axis used for shake correction among the correction axes of the first shake correction means based on the photographing state of the imaging device. It has a calculation means for obtaining a driving amount of the first runout correction means for correcting runout with respect to the set correction axis based on the runout amount of the image pickup apparatus.

According to the present invention, the correction range of image shake correction can be effectively utilized in various shooting states.

The block diagram which shows the schematic structure of the imaging system in this invention. The figure which shows the schematic structure of the anti-vibration drive unit and the state at the time of driving. The figure explaining the correction range in a roll direction and the correction range in a yaw direction and a pitch direction. The flowchart which shows the setting process of the correction axis according to the shooting condition in 1st Embodiment. The flowchart which shows the setting process of the correction axis according to the photographing condition and the type of the attached interchangeable lens in 2nd Embodiment. An example of setting a correction axis according to the shooting conditions and the type of the mounted interchangeable lens in the second embodiment. The figure explaining the pitch direction, the yaw direction and the roll direction of an image pickup apparatus.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The following embodiments do not limit the invention according to the claims. Although a plurality of features are described in the embodiment, not all of the plurality of features are essential to the invention, and the plurality of features may be arbitrarily combined. Further, in the attached drawings, the same or similar configurations are designated by the same reference numbers, and duplicate explanations are omitted.

FIG. 1 is a block diagram showing a schematic configuration of an imaging system according to the present invention. The imaging system in the present invention includes a camera body 100 and a photographing lens device (hereinafter, referred to as an "interchangeable lens") 200 that can be attached to and detached from the camera body 100. The camera body 100 may be a still camera or a video camera.

In the camera body 100, the image sensor 101 images (photoelectrically converts) a subject image formed by the image pickup optical system 210 included in the interchangeable lens 200. The output signal (imaging signal) from the image sensor 101 is input to the image processing unit 108. The image processing unit 108 performs various image processing on the image pickup signal to generate image data. The image data is displayed on a monitor (not shown) or recorded on a recording medium (not shown).

The image sensor 101 can move in a direction intersecting the optical axis OP of the image pickup optical system 210 by a shift mechanism described later. For example, it is possible to shift in a plane orthogonal to the optical axis OP, or to rotate in a plane orthogonal to the optical axis OP with the optical axis OP as the center of rotation.

The camera shake detection unit 105 detects the shake of the camera body 100 (hereinafter referred to as “camera shake”) caused by the user's camera shake or the like, and outputs a camera shake detection signal representing the camera shake to the camera microcomputer 102. .. The camera microcomputer 102 has a function as a control unit that controls the movement of the image sensor 101. The camera microcomputer 102 calculates the shift amount (drive amount) of the image sensor 101 for reducing (correcting) the image shake due to the camera shake from the camera shake detection signal, and controls the vibration isolation instruction including the shift amount by the sensor vibration isolation control. Output to unit 103. The sensor vibration isolation control unit 103 shifts and drives the image sensor 101 by the shift amount by controlling the actuator included in the shift mechanism in response to the vibration isolation instruction from the camera microcomputer 102. As a result, sensor vibration isolation (image blur correction) is performed.

The camera microcomputer 102 instructs the posture detection unit 104 to detect the posture of the camera body 100 (hereinafter, referred to as “camera posture”), and the posture detection unit 104 detects the camera posture and sends the posture detection signal to the camera microcomputer 102. Output. The camera posture includes a normal position, a vertical position (above the grip, below the grip), and upward. Further, the camera microcomputer 102 can communicate with the lens microcomputer 226 via the camera communication unit 106 and the lens communication unit 229 in the interchangeable lens 200.

In the interchangeable lens 200, the imaging optical system 210 includes a variable magnification lens 201, an aperture 202, a focus lens 203, and an anti-vibration lens (optical element) 204. The zoom control unit 221 can detect the position of the variable magnification lens 201 (hereinafter referred to as “zoom position”), and changes the magnification by driving the variable magnification lens 201 in response to a zoom drive command from the camera microcomputer 102. I do. The focus control unit 223 can detect the position of the focus lens 203 (hereinafter, referred to as “focus position”), and adjusts the focus by driving the focus lens 203 in response to a focus drive command from the camera microcomputer 102. ..

The aperture control unit 222 can detect the aperture diameter of the aperture 202 (hereinafter referred to as "aperture position"), and adjusts the amount of light by driving the aperture 202 in response to an aperture drive command from the camera microcomputer 102. The aperture control unit 222 may continuously detect and control the aperture position, or discontinuously detect and control the aperture position such as in the open state, the second stage (intermediate), and the first stage (minimum). You may. Further, in the detection of the diaphragm position, the diaphragm position may be detected by using the drive amount of the drive mechanism that drives the diaphragm 202.

Then, the zoom position, the aperture position, and the focus position detected by the zoom control unit 221 and the aperture control unit 222 and the focus control unit 223 are transmitted to the camera microcomputer 102. The zoom position to be transmitted may be information on the position of the variable magnification lens 201 or information on the focal length corresponding to the zoom position.

The anti-vibration lens 204 can be shifted in a direction including a directional component orthogonal to the optical axis by a shift mechanism (not shown) for anti-vibration. That is, it may be shifted in a plane orthogonal to the optical axis, or may be rotated around a point on the optical axis as a rotation center.

The lens shake detection unit 228 detects the shake of the interchangeable lens 200 (hereinafter, referred to as “lens shake”) caused by the user's camera shake or the like, and outputs a lens shake detection signal representing the lens shake to the lens microcomputer 226.

The lens microcomputer 226 calculates the shift amount (drive amount) of the vibration-proof lens 204 for reducing (correcting) the image shake due to the lens shake using the lens shake detection signal, and issues a vibration-proof instruction including the shift amount to the lens. Output to the anti-vibration control unit 224. The lens anti-vibration control unit 224 controls the movement of the anti-vibration lens 204 based on the anti-vibration instruction from the lens microcomputer 226. Specifically, lens vibration isolation is performed by driving the vibration isolation lens 204 by the calculated shift amount by controlling the actuator included in the shift mechanism in response to the vibration isolation instruction. The lens microcomputer 226 has a function as a transmission unit that reads information such as image circle information to be described later stored in the data storage unit (storage unit) 227 and transmits the image circle information or the like to the camera body 100.

The data storage unit 227 stores optical information such as a zoom range (variable range of focal length), a focus range (range of focusable distance), and a variable range of aperture value of the imaging optical system 210. Further, the data storage unit 227 stores information regarding the image circle of the imaging optical system 210 (hereinafter, referred to as “image circle information”). Here, the image circle information includes information representing the position of the image circle and information representing the size of the image circle. In the present embodiment, the image circle center information representing the center position of the image circle is stored as the information representing the position of the image circle.

FIG. 2A is a diagram showing a schematic configuration of an anti-vibration drive unit 301, which is a shift mechanism for shifting the image sensor 101. In FIG. 2A, the member 300 shown on the left side and the member 400 shown on the right side correspond to each other by * A to * D, and the member 300 is overlapped with respect to the member 400 so that the member 300 can be shifted.

The member 300 of the anti-vibration drive unit 301 includes an X-axis drive coil 303, a position sensor 302 for detecting a shift in the X-axis direction, Y-axis drive coils 304a and 304b, and a position sensor 305a for detecting a shift in the Y-axis direction. , 305b are arranged. Hall elements are usually used for the position sensor 302 and the position sensors 305a and 305b.

The member 400 is arranged with an X-axis permanent magnet 306 paired with the X-axis drive coil 303 and a Y-axis permanent magnet 307a, 307b paired with the Y-axis drive coils 304a, 304b, respectively.

FIG. 2B is a diagram showing a shift state of the member 300 when the X-axis drive coil 303 is energized. Here, as an example, a shift amount of 310 minutes in the −X direction (left direction) is taken. Shown. The magnetic flux generated in the coil by energizing the X-axis drive coil 303 and the magnetic flux generated by the X-axis permanent magnet 306 magnetically interfere with each other to generate Lorentz force. The anti-vibration drive unit 301 uses this Lorentz force as a thrust (driving force) to linearly move the member 300 in the X direction.

At that time, if it is driven extremely in the + side (right direction) or the-side (left direction) in the X-axis direction, the light passing through the lens causes exposure unevenness in the image pickup element 101, so it is usually driven to the limit. Try not to. The figure on the right side of FIG. 2B shows an example of exposure unevenness that occurs in the image sensor 101 when the member 300 is largely driven to the − side.

FIG. 2C is a diagram showing a shift state of the member 300 when the Y-axis drive coils 304a and 304b are energized in the same direction. Here, as an example, the shift amount is 311 minutes in the −Y direction (downward direction). , Shows the case of shifting. By energizing the Y-axis drive coils 304a and 304b in the same direction, the anti-vibration drive unit 301 linearly moves the member 300 in the Y direction using this Lorentz force as a thrust (driving force) on the same principle as the X-axis. Move.

At that time, if it is driven extremely in the Y-axis direction + side (upward direction) or-side (downward direction), the light passing through the lens causes exposure unevenness in the image pickup element 101, so that it is driven in the X-axis direction. As with doing so, you usually try not to drive to the limit. The figure on the right side of FIG. 2C shows an example of exposure unevenness that occurs in the image sensor 101 when the member 300 is largely driven to the − side.

FIG. 2D is a diagram showing a shift state of the member 300 when the Y-axis drive coils 304a and 304b are energized in the opposite direction. Here, as an example, when the Y-axis drive coils 304a and 304b are rotated counterclockwise for 312 minutes. Is shown. By energizing the Y-axis drive coils 304a and 304b in the opposite directions, the anti-vibration drive unit 301 rotates the member 300 using this Lorentz force as a thrust (driving force) on the same principle as the X-axis. The figure on the right side of FIG. 2D shows an example of exposure unevenness that occurs in the image sensor 101 when the member 300 is rotated counterclockwise while being largely driven upward.

Next, a correction range in the roll direction and a correction range in the pitch and yaw directions for preventing exposure unevenness as shown in the right side figures of FIGS. 2 (b) to 2 (d) will be described with reference to FIG. In the roll direction, the correction limit tends to be smaller than that in the pitch direction and the yaw direction due to the mechanical configuration. Therefore, if the maximum correction amount in the roll direction is determined first, the correction efficiency is good.

At this time, the relationship is (maximum correction amount including pitch direction and yaw direction) = (correction limit-maximum correction amount in roll direction). The details of how to calculate the maximum correction amount in the pitch direction and the yaw direction in the state where the maximum correction amount in the roll direction is secured will be described with reference to FIG. 3. FIG. 3A is mounted on the camera body 100. It is a figure explaining the calculation method of the correction range in the yaw direction (around the Y axis) in the state which secured the correction range in the roll direction (around the Z axis) with respect to the image circle of the interchangeable lens 200. The circle represents the image circle 500 of the interchangeable lens 200, and the rectangle partially inscribed inside indicates the light receiving region 501 of the image sensor 101.

It is assumed that the image sensor 101 is rotated counterclockwise by an angle Θ _max which is the maximum correction amount in the roll direction. Regarding the roll direction, the counterclockwise rotation is the + direction, and the clockwise rotation is the-direction. _{Further, let L be half of the diagonal line of the image sensor 101, and let Θ L} be the angle formed by the half of the diagonal line and the horizontal line in the longitudinal direction at the center of gravity of the rectangle. At this time, the amount of movement X in the yaw direction within the range where the vertices of the four corners of the light receiving region 501 do not exceed the image circle 500 becomes _{the maximum amount of correction X max in the yaw direction.}

When the image sensor 101 is moved in the + direction, the point where one vertex P1 of the light receiving region 501 and the image circle 500 come into contact is assumed that the center O of the image circle 500 is (0,0).
(X _max + Lcos (Θ _{L --Θ max} ), Lsin (Θ _{L --Θ max} ))
It can be expressed as.

となる。 Here, using the three-square theorem with the radius of the image circle as R,

Will be.

FIG. 3B is an image diagram illustrating the calculation of the correction range in the pitch direction with respect to the image circle 500 of the interchangeable lens 200 mounted on the camera body 100 in a state where the roll correction range is secured. Similar to FIG. 3A, the movement amount Y in the pitch direction within the range where the vertices of the four corners of the light receiving region 501 do not exceed the image circle 500 is the maximum correction amount Y _{max in the} pitch direction.

When shifting the image sensor 101 in the + direction, the point where one vertex P1 of the light receiving region 501 and the image circle 500 come into contact is assumed that the center O of the image circle 500 is (0,0).
(Lcos (Θ _L + Θ _max ), Y _max + Lsin (Θ _L + Θ _max )
It can be expressed as.

となる。 Here, using the three-square theorem with the radius of the image circle as R,

Will be.

_{As described above, when the maximum correction amount ± Θ max} is secured as the correction range in the roll direction, the correction range in the pitch direction is the maximum correction amount ± Y according to the size of the image circle of the interchangeable lens 200 to be mounted. _{Within the range indicated by max} , the correction range in the yaw direction is within the range indicated by the maximum correction amount ± X _max .

In this way, if the correction range in the roll direction is secured, the correction range in the yaw direction and the pitch direction is restricted. Therefore, by selecting in which direction the correction is performed, that is, which correction axis is used for correction, and assigning the maximum correction amount suitable for the correction axis, the range in which image shake correction is possible is effectively utilized. can do.

<First Embodiment>
Hereinafter, the first embodiment of the present invention will be described. In the first embodiment, in the imaging system having the above configuration, the correction axis used when performing image shake correction by sensor vibration isolation is set according to the shooting state. As described above, there are five types of correction axes for correcting angular blur in the pitch direction and yaw direction, shift blur in the vertical / horizontal parallel direction, and roll blur in the rotational direction, for a total of five axes. There is a correction axis. Here, which of these correction axes is used is set.

FIG. 4 is a flowchart showing a correction axis setting process when the image sensor 101 is driven to perform vibration isolation control, which is performed by the sensor vibration isolation control unit 103. The sensor vibration isolation control unit 103 executes the process shown in FIG. 4 in response to the vibration isolation instruction from the camera microcomputer 102.

First, in S101, the sensor vibration isolation control unit 103 acquires a shooting state via the camera microcomputer 102.

Next, in S102, the sensor vibration isolation control unit 103 determines whether the shooting state acquired in S101 is the still image mode. If it is in the still image mode, the process proceeds to S103, and if it is not the still image mode, the process proceeds to S106.

In S103, the sensor anti-vibration control unit 103 determines whether the shooting state acquired in S101 is the time of still image exposure. If it is a still image exposure, the process proceeds to S104, and if it is not a still image exposure, the process proceeds to S105.

In S104, the sensor anti-vibration control unit 103 sets the anti-vibration control for still image exposure. Specifically, anti-vibration control is set to be performed for all correction axes.

On the other hand, in S105, the sensor anti-vibration control unit 103 sets the anti-vibration control for the still image standby in the still image mode and not in the still image exposure, that is, in the still image standby. Here, it is set so that the vibration isolation control is not performed for any of the correction axes. This is to secure a correction amount at the time of still image exposure in preparation for still image exposure and effectively utilize the range that can be corrected by the vibration isolation drive unit 301.

In S106, since it is determined that the mode is not the still image mode, it is determined that the mode is the moving image mode, and the sensor anti-vibration control unit 103 sets the anti-vibration control for the moving image. Specifically, anti-vibration control is set to be performed for all correction axes.

Further, at the time of moving image, a large amount of correction for roll blur in the rotation direction may be allocated, and a smaller amount of correction for angular blur and shift blur may be allocated accordingly. This is to effectively correct the roll blur that occurs when shooting a moving image, especially when shooting a walking image. The information of the camera shake detection unit 105 may be used to determine the state of walking shooting.

As described above, according to the first embodiment, the correction axis used for the vibration isolation control is set according to the photographing state. While the still image is on standby, vibration isolation control is performed in all directions in preparation for still image exposure, while vibration isolation control is not performed in all directions during still image exposure or moving image. Further, in the case of moving images, by allocating a large amount of correction in the roll direction, it is possible to effectively correct the roll blur that occurs during image shooting, especially during walking shooting.

In the above-mentioned example, all the correction axes are set in S104 and S106, and none of the correction axes is set in S105, but the present invention is not limited to this. For example, vibration isolation control may be performed on some of the correction axes during still image standby. Further, the correction axis used may be different between the time of still image shooting and the time of moving image.

<Second embodiment>
Next, a second embodiment of the present invention will be described. In the second embodiment, the correction axis used in the vibration isolation control by the vibration isolation drive unit 301 is set according to the mounted interchangeable lens in addition to the photographing state.

FIG. 5 is a flowchart showing a correction axis setting process when the image sensor 101 is driven to perform vibration isolation control, which is performed by the sensor vibration isolation control unit 103. The sensor vibration isolation control unit 103 executes the process shown in FIG. 5 in response to the vibration isolation instruction from the camera microcomputer 102.

First, in S201, the sensor anti-vibration control unit 103 sets the correction axis according to the shooting state described in the flowchart of FIG. 4 in the first embodiment.

Next, in S202, the sensor vibration isolation control unit 103 acquires information on the lens type of the interchangeable lens mounted on the camera body 100 via the camera microcomputer 102.

In S203, the sensor vibration isolation control unit 103 determines whether or not the interchangeable lens has an image shake correction function from the lens type information acquired in S202. If the lens has an image shake correction function, the process proceeds to S204, and if the lens does not have the image shake correction function (a lens that does not support image shake), the process proceeds to S211. In S211 the mounted interchangeable lens is a lens having no image shake correction function, so the correction axis is set accordingly.

On the other hand, in S204, the sensor anti-vibration control unit 103 determines from the lens type information acquired in S202 whether shift blur can be corrected in addition to angle blur. If it is an interchangeable lens that can correct shift blur (angle blur + shift blur compatible lens), proceed to S205, and if it is an interchangeable lens that cannot perform shift blur correction (angle blur compatible lens), proceed to S208.

In S205, the sensor anti-vibration control unit 103 determines from the lens type information acquired in S202 whether it is possible to simultaneously perform lens anti-vibration and sensor anti-vibration on the same correction axis. If the interchangeable lens can perform lens vibration isolation and sensor vibration isolation for the same correction axis at the same time, the process proceeds to S206, otherwise the process proceeds to S207.

In S206, the mounted interchangeable lens is an interchangeable lens compatible with angle blur + shift blur, and the lens vibration isolation and the sensor vibration isolation can be simultaneously performed on the same correction axis. Set the axis.

On the other hand, in S207, the attached interchangeable lens is an interchangeable lens compatible with angle blur + shift blur, but since the lens vibration isolation and the sensor vibration isolation cannot be performed on the same correction axis at the same time, the correction is made accordingly. Set the axis.

In S208, from the lens type information acquired in S202, the sensor anti-vibration control unit 103 determines whether or not the mounted angle blur-compatible lens can simultaneously perform lens anti-vibration and sensor anti-vibration on the same correction axis. To judge. If it is an interchangeable lens capable of performing lens vibration isolation and sensor vibration isolation for the same correction axis at the same time, the process proceeds to S209, otherwise the process proceeds to S210.

In S209, the mounted interchangeable lens is an interchangeable lens that is compatible with angle blurring and can simultaneously perform lens vibration isolation and sensor vibration isolation on the same correction axis. Make settings.

On the other hand, in S210, the mounted interchangeable lens is an angle blur compatible lens, but since the lens vibration isolation and the sensor vibration isolation cannot be performed on the same correction axis at the same time, the correction axis corresponding to the correction axis is used. Make settings.

When the setting is completed in any of S206, 207, S209 to S211, the process ends.

Next, FIG. 6 shows an example of a correction axis used for vibration isolation control, which is set in S206 to S207 and S209 to S211 and is set according to the type of mounted lens. Depending on the lens type, some of the correction axis settings made in S201 according to the shooting conditions are changed. For example, as shown in FIG. 6A, when a still image is exposed, an angle blur compatible lens or When an angle blur + shift blur compatible lens is attached, if the lens is not compatible with simultaneous correction, the vibration isolation for the correction axis that can be corrected is left to the lens side, and the camera body 100 side is vibration-proof for the remaining correction axis. On the other hand, if the lens supports simultaneous correction, the angle blur is corrected at the same time on the lens side and the camera body 100 side, but the shift blur is corrected on either the lens side or the camera body 100 side.

If the lens does not support simultaneous correction, only the remaining correction axes need to be corrected on the camera body 100 side, so the allocation amount for each can be increased and the sensor vibration isolation can be effectively used. Because it can be done. If the lens supports simultaneous correction, the deflection is corrected for many axes, so the allocation amount of each correction axis is small, but the same axis can be corrected at the same time, so the total The amount of correction is large, and the anti-vibration effect is also enhanced. Further, the deviation correction error can be reduced by correcting the shift blur on either the lens side or the camera body 100 side. This was obtained when the lens side and the camera body 100 side each tried to acquire the radius of gyration when acquiring the radius of gyration of the camera body 100 when acquiring the amount of shift blur correction. This is because there is a possibility that the turning radius will have an error. The method of acquiring the turning radius and the method of obtaining the shift blur amount using the turning radius are known techniques, and are described in, for example, Japanese Patent Application Laid-Open No. 2010-054986, Japanese Patent Application Laid-Open No. 2017-126040, and the like. Therefore, detailed description will be omitted.

Further, as shown in FIG. 6C, during moving images, shift blur is performed only on the camera body side even if the lens is compatible with angle blur + shift blur. The method of setting other correction axes is the same as that for still image exposure.

On the other hand, as shown in FIG. 6B, when the still image is on standby, all the axes are not corrected depending on the shooting state, but in the case of a lens that does not support image shake, the angle blur is corrected even when the still image is on standby. May be performed to suppress image shake.

As described above, according to the second embodiment, in addition to the shooting state, the lens vibration isolation depends on the correction axis that can be corrected by the interchangeable lens mounted on the camera body and whether or not the camera body and the camera body support simultaneous correction. And set the correction axis used for each sensor vibration isolation. As a result, the lens vibration isolation and the sensor vibration isolation can be effectively utilized.

<Third embodiment>
Next, a third embodiment of the present invention will be described. In the third embodiment, in addition to the photographing state, the correction axis used in the sensor vibration isolation is set according to the attached interchangeable lens, and the correction amount allocation is changed according to the photographing condition.

In general, the effect of shift blur becomes remarkable in the case of macro photography in which the shooting magnification is large. Therefore, when a lens that supports angle blur or a lens that does not support image shake is attached during still image exposure and shift blur is corrected by sensor vibration isolation, the amount of shift blur correction is set large in macro photography, and angle blur and roll blur are set accordingly. If is made smaller, the influence of shift blur can be further suppressed.

Further, the allocation of the correction amount may be changed according to the holding state of the camera. For example, in the case of fixed-point shooting in which the camera is firmly held, the effect of angle blur is remarkable, so the correction amount is preferentially assigned to angle blur. Further, as described in the first embodiment, since the influence of the roll blur is increased in the walking shot of the moving image, the correction amount is preferentially assigned to the roll blur.

Further, when the electronic vibration isolation that corrects the blur by shifting the reading range from the image sensor 101 is effective, the roll blur correction is performed only by the electronic vibration isolation, and the optical vibration isolation that drives the image sensor 101 is used. Other correction axes may be focused on. On the contrary, the correction axis other than the roll blur may be corrected by the electronic vibration isolation, and only the roll blur may be corrected in the optical vibration isolation that drives the image sensor 101. In general, the anti-vibration lens cannot correct the roll blur, so the total anti-vibration effect can be enhanced by correcting the roll blur with the image sensor 101 or the electronic anti-vibration.
<Other Embodiments>
The present invention also supplies a program that realizes one or more functions of the above-described embodiment to a system or device via a network or storage medium, and one or more processors in the computer of the system or device implement the program. It can also be realized by the process of reading and executing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

The invention is not limited to the above embodiments, and various modifications and modifications can be made without departing from the spirit and scope of the invention. Therefore, a claim is attached to make the scope of the invention public.

100: Camera body, 101: Imaging element, 102: Camera microcomputer, 103: Sensor vibration isolation control unit, 105: Camera vibration detection unit, 108: Image processing unit, 200: Interchangeable lens, 204: Anti-vibration lens, 224: Lens Anti-vibration control unit, 226: lens microcomputer, 227: data storage unit

Claims (18)

Of the correction axes of the first shake correction means, the setting means for setting the correction axis used for the shake correction based on the shooting state of the image pickup apparatus, and
A vibration isolator including a calculation means for obtaining a driving amount of the first runout correction means for correcting shake with respect to the set correction axis based on the runout amount of the image pickup device. The anti-vibration device according to claim 1, wherein the shooting state is one of a state including a still image shooting, a still image standby, and a moving image shooting. The vibration isolator according to claim 2, wherein all the correction axes of the first shake correction means are set to be used for shake correction when the shooting state is a still image shooting. 2. The second aspect of the present invention, wherein at least a part of the correction axes of the first shake correction means is set not to be used for the shake correction when the shooting state is in the still image standby state. The anti-vibration device according to 3. The invention according to any one of claims 2 to 4, wherein all the correction axes of the first shake correction means are set to be used for the shake correction when the shooting state is the time of moving image shooting. Anti-vibration device. The anti-vibration device according to claim 1 or 2, wherein the setting means further sets a correction axis used for shake correction based on the type of the lens device mounted on the image pickup device. The first runout correction means is provided in the image pickup apparatus.
When the lens device has a second runout correction means, the setting means means runout correction among the correction axis of the first runout correction means and the correction axis of the second runout correction means. The anti-vibration device according to claim 6, wherein the correction axis used for the above method is set. The type of the lens device includes information on the correction axis of the second runout correction means and information on whether or not runout correction can be performed using the same correction axis as the first runout correction means at the same time. The anti-vibration device according to claim 7. When the second runout correction means cannot perform runout correction using the same correction axis as the first runout correction means at the same time, the setting means sets the correction axis of the second runout correction means to runout. The anti-vibration device according to claim 8, wherein the correction axis used for correction is preferentially set. The vibration isolator according to any one of claims 7 to 9, wherein the correction axis of the second runout correction means is an angle blur correction axis and a shift blur correction axis. Any one of claims 1 to 10, wherein the correction axis of the first runout correction means is a blur correction axis centered on the optical axis, an angle blur correction axis, and a shift blur correction axis. The anti-vibration device described in the section. The vibration isolator according to any one of claims 1 to 11, wherein the setting means further changes the allocation of the correction amount to the correction axis used for the shake correction according to the shooting conditions. The vibration isolation device according to claim 12, wherein the imaging conditions include a photographing magnification, a holding state of the imaging device, and settings for whether or not to perform electronic vibration isolation. It has an image pickup device that photoelectrically converts a subject image formed by a lens device and outputs an image pickup signal, and a vibration isolator according to any one of claims 1 to 13.
The first shake correction means is an image pickup apparatus including the image pickup element and a drive means for driving the image pickup element with respect to the correction axis. It has an image pickup device that photoelectrically converts a subject image formed by a lens device and outputs an image pickup signal, and a vibration isolator according to any one of claims 1 to 5.
The first shake correction means is an imaging device including a vibration-proof lens included in the lens device and a drive means for driving the vibration-proof lens with respect to the correction shaft. A setting step in which the setting means sets the correction axis used for the shake correction among the correction axes of the first shake correction means based on the shooting state of the imaging device.
The calculation means is characterized by having a calculation step of obtaining a drive amount of the first runout correction means for correcting runout with respect to the set correction axis based on the runout amount of the image pickup apparatus. Anti-vibration method. A program for causing a computer to function as each means of the anti-vibration device according to any one of claims 1 to 13. A computer-readable storage medium that stores the program according to claim 17.

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